However, next time i its better if you were the judges, this is because i do not see any input of the judges unless it was done privately of which i think everything was to be transparent for everyone to see. My suggestion is that if you want to organize something like this next time. You can make your personal judgement. I know what you try to do here but it didn't work out as planned. That should be enough reasons to take your own personal decisions.
I am one of the judges and you saying that you did not see any input from any of the judges is a disrespect bud, however, this is just a merit contest after all, but let's not do away with the fact that this could get bigger in the future.
Mia Chloe did the right thing by assigning other users as judges, together with him self to decide the winner of this contest, this is part of being transparent, as if he himself was the only one to judge who won, many would have suspected that he gave the winnings to his alt accounts, or user he has some private connection with, but with multiple people deciding the winner, there was no room for such manipulation.
And speaking on the process of selecting the winners, I can assure you it was as transparent as possible, the judges came up with a spreadsheet of all the contestants, with their usernames linking to their art submission respectively, judges take a look at the user's art submission and score it from 1 to 10, the three contestants with the highest scores came out as winners.
I am still trying to convince Mia Chloe to make this spreed sheet public for transparency purposes.